Leer feeder attachment



Dec. 29, 1931. H. FREESE LEER FEEDER ATTACHMENT Filed April 9, 1929 tion; or if a number of such articles are al` accompanying drawing;

Patented Dec. 2 9, 1931 UNITED STATES PATENT oFFlcE IRA H. FREESE, OE CLARKSB'URG, WEST VIRGINIA, ASSIGNOR TO HAZEL-ATLAS GLASS CO., 0F WHEELING, WESTF'VIRGINIA, A CORPORATION OF 'WEST VIRGINIA LEER FEEDER ATTACHMENTV Application filedl April 9,

This invention relates to leer feeders generally and has for its primary object to provide an attachment for such devices which Awill insure the projection of all ware into the leer and avoid liability of breakage of ware by `being caught between the usual stripper bar and the leer proper.

In the leer feeders or leer loaders now in common use it sometimes happens that a piece of ware being carried across the front of the leer has not quite reached a point directly in front of the stripper bar at the time the 'latter moves forward into the leer. Under such circumstances this piece of ware may be pushed to one side and thus lost to produclowed to collect at the side of the leer they may eventually be caught between the side of the leer and the adjacent end of the stripper bar and broken, thereby causing considerable trouble.

It is an object of the present invention, therefore, to provide a mechanism of simple construction which will operate after each cycle of the stripper bar to project into the path of the latter any articles which may have been pushed to-one side of the path of travel of the stripper bar during its last movement into the leer.

Another object of the invention resides in the rovision of such a mechanism-which is sync automaticallyprojected into the leer from one side thereof after each withdrawal of the stripper bar from the leer.

Other objects and advantages of the invention will be apparent from the following description when taken in connection with the in which The figure is a plan View of a conventional type of rleer with parts broken away, and

showing so much of a leer feeder of the` stripper bar type as is necessary to an understanding of the present invention which latter is shown in plarview installed at one side of the leer.

More specically the numeral 1 indicates an annealing leer for glassware or thelike provided with the usual cross-conveyer 2 which travels continuously across the front ronized with the stripper bar, and is- 1929. Serial N0. 353,771.

ly flush with the shadow pan 3 anddeer conveyer 4; it being understood that the shadow4 pan 3' generally serves to span the gap between the two conveyers.

The stripper bar 5 is mounted on one or more rods 6 and is reciprocated back and forth in alignment with the leer conveyer 4 by means of a cylinder 7 and piston rod 8. Motive fluid is conveyed to the opposite ends of the cylinder 7 by means of pipes 9 and 10, and the operation of the cylinder and stripper bar may be synchronized with the movement of the cross-conveyer by means of any preferred type of timing mechanism.

In the operation of feeders as above constituted it often happens that the piece of ware adjacent the end 5 of the stripper bar 5 is not directly in the path of movement of the bar. Under such circumstances this piece of ware may be pushed olil to one side of the leer as indicated in dotted outline on the drawing, and thus will not be carried forward by the main leerconveyer 4. Unless, therefore, some means is provided'for replacing this piece of ware in alignment with the stripper bar it will be lost to production,

and after several such pieces collect at the side of the *eer they are liable to become broken by being wedged between the leer wall and the adjacent end of the stripper bar. Hence it is desirable that some means be providedy for traversing this part of the leer after each inward stroke of the stripper bar 5. To this end I have provided the following mechanism which is automatically synchronized with the stripper bar and cross-conveyer.

Mounted on a standard which forms a support for one of the rollers of the cross conveyer 2 is Va cylinder 11 provided with a piston and piston rod 12. This rod passes through the side of 'the leer adjacent .the cross-conveyer, as indicated by numeral 13, and carries on its end a replacer-bar 14. The inner position of the replacer b ar is shown in full lines and the outer position in dotted lines, from which it will be clear that the travel of this bar fully covers the area of the leer in which pieces of ware are liable to be noted, however,

inadvertently pushed to one side by the stripper bar in its movement into the leer.

reciprocable movement is imparted to the piston of cylinder ll by a motive Huid conveyed to the respective ends of the cylinder through pipes 9 and 10 which are in communication respectively with the pipes 9 and `l0 of the cylinder 7. It should be that Whereas the pipe 9 leads to the inner end of cylinder 7 the pipe 9 leads to the outer end of cylinder l1, hence the movements of these two cylinders and the stripper bar and replacer bar associated therewith, are opposed, i. e., as the stripper bar is projected across the cross-conveyer into the leer, the replacer bar is withdrawn to the side of the leer and vice versa. The two extreme positions of the stripper bar and the replacer bar are shown in full and dotted lines, and it will be apparent from the preceding description that after each line of ware is carried into the leer by the stripper bar, the replacer bar will carry any articles pushed to the side of the leer onto the leer conveyer or at least into the path of movement of the stripper bar, from which position it will be carried onto the leer conveyer by the neXt inward movement of the stripper bar.

From the foregoing description andthe attached drawing it will be apparent to those skilled in the art that I have devised a simple yet durable mechanism, entirely synchronized with the movements of a leer feeder stripper bar, which will automatically return to the active part ofthe leer and leer feeder, any articles which may have been projected beyond the contines of the main conveyer in the operation of the stripper bar. thus be seen that there is restored to production such articles as were heretofore lost and which' also seriously interfered with the normal operation of the stripper bar.

While the replacer bar disclosed on the accompanying drawing is mounted for rectiinear movement and is operated by a cylinder and piston, the invention is not so limited, since this, mechanism may assume It will than in any limiting sense.

Having fully described my invention what claim as new and desire to secure by Letters Patent is:

l. A leer feeder including a cross-conveyer, a stripper vbar for moving ware from said cross-conveyer into a leer, and a replacing bar synchronized with said stripper bar and reciprocable in a path crossing that of the stripper bar.

2. A leer feeder including a cross-conveyer, a reciprocable stripper bar for moving ware from said cross-conveyer into a leer, and a replacing bar reciprocable in a angles to the per bar.

3. A leer feeder including a cross-conveyor, a reciprocable stripper bar for moving ware from said cross-conveyer into a leer, a replacing bar reciprocable in a path at right angles to the path of movement of the stripper bar, and means for alternately projecting the stripper bar and the replacing bar into the leer. f

4. A leer feeder including a cross-conveyer, a stripper bar for said cross-conveyer, a replacing bar at one side of the leer and positioned at right angles to the stripper bar, cylinders for operating said bars, and pipes for conveying motive fluid simultaneously to the inner end of one cylinder and the outer end of the other cylinder.

5. A leer feeder including a cross-conveyer extending across the front of a. leer, a stripper bar, means for periodically operating the stripper bar to push ware from the crossconveyer into the leer, a replacing bar arranged at one side of the leer, and means for periodically moving the replacing bar toward and from the opposite side o f the leer, to move misplaced ware into the path of movement of the stripper bar.

6. A leer feeder including a cross-conveyer extending lacross the front of a leer, a stripl per bar, means for periodically moving the stripper bar longitudinally of the leer, to push ware from the cross-conveyer into the leer, a replacer bar arranged at one side of the leer, and means for periodically moving the replacer bar transversely of the leer, to move misplaced Ware into the path of movement of the stripper bar.

7. A leer feeder including a cross-conveyer extending across the front of a leer, a stripper bar, means for moving the stripper bar back and forth longitudinally of the leer to push ware from the cross-conveyer into the path at right path of movement of the stripleer, a replacer bar arranged at one side of the leer, and means for moving the replacer transversely of the leer, the replacer bar and the stripper bar being simultaneously movable.

IRA H. rennen. 

